1220022112021 has 8 divisors (see below), whose sum is σ = 1230071731200. Its totient is φ = 1209979417248.

The previous prime is 1220022111977. The next prime is 1220022112037. The reversal of 1220022112021 is 1202112200221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220022112021 - 2⁹ = 1220022111509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220022111986 and 1220022112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220022122021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376971 + ... + 2082328.

It is an arithmetic number, because the mean of its divisors is an integer number (153758966400).

Almost surely, 2^{1220022112021} is an apocalyptic number.

It is an amenable number.

1220022112021 is a deficient number, since it is larger than the sum of its proper divisors (10049619179).

1220022112021 is a wasteful number, since it uses less digits than its factorization.

1220022112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462203.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220022112021 its reverse (1202112200221), we get a palindrome (2422134312242).

It can be divided in two parts, 12200221 and 12021, that multiplied together give a palindrome (146658856641).

The spelling of 1220022112021 in words is "one trillion, two hundred twenty billion, twenty-two million, one hundred twelve thousand, twenty-one".